Patent · US Active

Controlling update of content of a programmable read-only memory

US8028174B2 · kind B2 · utility

1Cited by

8References

14Claims

0Family size

Assignee

HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. · US

Inventors

Paul Bouchier · Little Elm, US
John R. Diamant · Fort Collins, US
Gerald J. Kaufman, Jr. · Fort Collins, US

Key dates

Filing date	May 4, 2005
Grant date	Sep 27, 2011
Priority date	—
Expiry date	Jul 28, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG06F9/5077
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

To control update of content in a programmable read-only memory in a system, the security status associated with the system is determined, where the security status is one of a secure mode and non-secure mode. In response to detecting that the system is in secure mode, a write to the programmable read-only memory is enabled. In response to detecting that the system is in non-secure mode, a write to the programmable read-only memory is disabled.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.